<template>
    <div>
        <!-- 面包屑导航区域 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- 卡片视图区域 -->
        <el-card class="box-card">
            <!-- 搜索与添加区域 -->
            <el-row :gutter="40">
                <el-col :span="8">
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                        <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4"></el-col>
                <el-button type="primary" @click="addDialogVisible=true">添加用户</el-button>
            </el-row>

            <!-- 用户列表区 -->
            <el-table :data="userlist" style="width: 100%" border stripe>
                <el-table-column label="#" type="index"></el-table-column>
                <el-table-column prop="username" label="姓名" align="center" header-align="center"></el-table-column>
                <el-table-column prop="email" label="邮箱" align="center" header-align="center"></el-table-column>
                <el-table-column prop="mobile" label="电话" align="center" header-align="center"></el-table-column>
                <el-table-column prop="role_name" label="角色" align="center" header-align="center"></el-table-column>
                <el-table-column label="状态" n="center" header-align="center">
                    <template slot-scope="scope">
                        <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"> </el-switch>
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="173px">
                    <template slot-scope="scope">
                        <!-- 修改按钮 -->
                        <el-button type="primary" icon="el-icon-edit" size="mini" @click=" showEditDialog(scope.row.id)"></el-button>
                        <!-- 删除按钮 -->
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                        <!-- 分配角色按钮 -->

                        <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                            <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
                        </el-tooltip>
                    </template>
                </el-table-column>
            </el-table>

            <!-- 分页区域 -->
            <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="queryInfo.pagenum" :page-sizes="[1,2,5,10]" :page-size="queryInfo.pagesize" layout="total, sizes, prev, pager, next, jumper" :total="total">
            </el-pagination>
        </el-card>

        <!-- 添加用户的对话框 -->
        <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
            <!-- 内容主体区域 -->
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
                <el-form-item label="用户名" prop="username">
                    <el-input v-model="addForm.username"></el-input>
                </el-form-item>
                <el-form-item label="密码" prop="password">
                    <el-input v-model="addForm.password"></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="addForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="addForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <!-- 底部区域 -->
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addUser">确 定</el-button>
            </span>
        </el-dialog>

        <!-- 修改用户的对话框 -->
        <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
            <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
                <el-form-item label="用户名">
                    <el-input v-model="editForm.username" disabled></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="editForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="editForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editUserInfo">确 定</el-button>
            </span>
        </el-dialog>

        <!-- 分配角色的对话框 -->
        <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
            <div>
                <p>当前的用户:{{userInfo.username}}</p>
                <p>当前的角色:{{userInfo.role_name}}</p>
                <p>分配新角色:
                    <el-select v-model="selectedRoleId" placeholder="请选择">
                        <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id">
                        </el-option>
                    </el-select>
                </p>
            </div>
            <span slot="footer" class="dialog-footer">
                <el-button @click="setRoleDialogVisible= false">取 消</el-button>
                <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
            </span>
        </el-dialog>
    </div>
</template>

<script>
export default {
    data () {
        // 验证邮箱的规则
        var checkEmail = (rule, value, cb) => {
            // 验证邮箱的正则表达式
            const regEmail = /^[A-Za-z\d]+([-_.][A-Za-z\d]+)*@([A-Za-z\d]+[-.])+[A-Za-z\d]{2,4}$/
            if (regEmail.test(value)) {
                return cb()
            }
            cb(new Error("请输入合法的邮箱"))
        }

        // 验证手机号的规则
        const checkMobile = (rule, value, cb) => {
            let reg = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
            if (reg.test(value)) {
                cb()
            } else {
                cb(new Error('手机号码格式不正确'))
            }
        }

        return {
            // 获取用户列表的参数对象
            queryInfo: {
                query: "",
                // 当前的页数
                pagenum: 1,
                // 当前每页显示多少条数据
                pagesize: 2,
            },
            userlist: [],
            total: 0,
            // 控制添加用户对话框的显示与隐藏
            addDialogVisible: false,
            // 添加用户的表单数据
            addForm: {
                username: "",
                password: "",
                email: "",
                mobile: ""
            },
            // 添加表单的验证规则对象
            addFormRules: {
                username: [
                    { required: true, message: '请输入用户名', trigger: 'blur' }, { min: 3, max: 10, message: "用户名的长度在3-10个字符之间", trigger: "blur" }],
                password: [
                    { required: true, message: '请输入密码', trigger: 'blur' }, { min: 6, max: 15, message: "用户名的长度在6-15个字符之间", trigger: "blur" }],
                email: [
                    { required: true, message: '请输入邮箱', trigger: 'blur' }, { validator: checkEmail, trigger: 'blur' }],
                mobile: [
                    { required: true, message: '请输入手机号', trigger: 'blur' },
                    { validator: checkMobile, trigger: 'blur' }
                ]
            },
            // 控制修改用户对话框的显示与隐藏
            editDialogVisible: false,
            // 查询到的用户信息对象
            editForm: {},
            // 修改表达的验证规则对象
            editFormRules: {
                email: [
                    { required: true, message: '请输入用户邮箱', trigger: 'blur' },
                    { validator: checkEmail, trigger: 'blur' }
                ],
                mobile: [
                    { required: true, message: '请输入用户手机', trigger: 'blur' },
                    { validator: checkMobile, trigger: 'blur' }
                ],

            },
            // 控制分配角色对话框的显示与隐藏
            setRoleDialogVisible: false,
            // 需要被分配角色的用户信息
            userInfo: {},
            // 所有角色的数据列表
            rolesList: [],
            // 已选中的角色Id值
            selectedRoleId: ''
        };
    },
    created () {
        this.getUserList();
    },
    methods: {
        // 正确的返回不用return如果return的话运行不了后面的语句
        async getUserList () {
            const { data: res } = await this.$http.get("users", {
                params: this.queryInfo,
            });
            this.userlist = res.data.users;
            this.total = res.data.total;
            console.log(res);
            // if(res.meta.status!==200)return this.$message.error
        },
        // 监听pagesize改变的事件
        handleSizeChange (newSize) {
            this.queryInfo.pagesize = newSize
            this.getUserList()
        },
        // 监听 页码值 改变的事件
        handleCurrentChange (newPage) {
            this.queryInfo.pagenum = newPage
            this.getUserList()
        },
        // 监听switch开光状态的改变
        // 很多时候我们有很多业务，需要依次调用多个后台接口，并且后一个接口需要依赖前一个接口的响应结果，如果上一个接口挂了，后一个接口也就不需要调用了
        async userStateChanged (userinfo) {
            const { data: res } = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
            if (res.meta.status !== 200) {
                userinfo.mg_state = !userinfo.mg_state
                return this.$message.error('更新用户状态失败!')
            }
            this.$message.success('更新用户状态成功!')
        },
        // 监听添加用户对话框的关闭事件
        addDialogClosed () {
            this.$refs.addFormRef.resetFields()
        },
        // 点击按钮，添加新用户
        addUser () {
            this.$refs.addFormRef.validate(async valid => {
                if (!valid) return
                // 可以发起添加用户的网络请求
                const { data: res } = await this.$http.post('users', this.addForm)
                if (res.meta.status !== 201) {
                    this.$message.error("添加用户失败!")
                }
                this.$message.success("添加用户成功!")
                // 隐藏添加用户的对话框
                this.addDialogVisible = false
                // 重新获取用户的列表
                this.getUserList()
            })
        },
        // 展示编辑用户的对话框
        async showEditDialog (id) {
            const { data: res } = await this.$http.get('users/' + id)
            if (res.meta.status != 200) {
                return this.$message.error("编辑用户信息失败!")
            }
            this.editForm = res.data
            this.editDialogVisible = true
        },
        // 监听修改用户对话框的关闭事件
        editDialogClosed () {
            this.$refs.editFormRef.resetFields()
        },
        // 修改用户信息并提交
        editUserInfo () {
            this.$refs.editFormRef.validate(async valid => {
                if (!valid) return
                // 发起修改用户信息的数据请求
                const { data: res } = await this.$http.put('users/' + this.editForm.id, { email: this.editForm.email, mobile: this.editForm.mobile })
                if (res.meta.status !== 200) {
                    return this.$message.error('更新用户信息失败！')  // 关闭对话框
                }
                this.editDialogVisible = false
                // 刷新数据列表
                this.getUserList()
                // 提示修改成功
                this.$message.success('更新用户信息成功!')
            })
        },
        // 根据id删除对应的用户信息
        async removeUserById (id) {
            // 弹框询问用户是否删除数据
            const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch(err => err)
            // 如果用户确认删除，则返回的值为字符串confirm
            // 如果用户取消了删除，则返回值为字符串cancel
            if (confirmResult != 'confirm') {
                return this.$message.info('已取消删除')
            }
            const { data: res } = await this.$http.delete('users/' + id)
            if (res.meta.status !== 200) {
                return this.$message.error('删除用户失败!')
            }
            this.$message.success('删除用户成功!')
            this.getUserList()
        },
        // 展示分配角色的对话框
        async setRole (userInfo) {
            this.userInfo = userInfo

            // 在展示对话框之前，获取所有角色的列表
            const { data: res } = await this.$http.get('roles')
            if (res.meta.status !== 200) {
                return this.$message.error('获取角色列表失败!')
            }

            this.rolesList = res.data

            this.setRoleDialogVisible = true
        },
        // 点击按钮，分配角色
        async saveRoleInfo () {
            if (!this.selectedRoleId) {
                return this.$message.error('请选择要分配的橘色')
            }

            const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, {
                rid: this.selectedRoleId
            })

            if (res.meta.status !== 200) {
                return this.$message.error('更新角色失败!')
            }

            this.$message.success('更新角色成功!')
            this.getUserList()
            this.setRoleDialogVisible = false
        },
        // 监听分配角色对话框的关闭事件
        setRoleDialogClosed () {
            this.selectedRoleId = ""
            this.userInfo = {}
        }
    }
};
</script>
 
<style lang="scss" scoped></style>
